Towards non-blinking and photostable perovskite quantum dots
Abstract Surface defect-induced photoluminescence blinking and photodarkening are ubiquitous in lead halide perovskite quantum dots. Despite efforts to stabilize the surface by chemically engineering ligand binding moieties, blinking accompanied by photodegradation still poses barriers to implementi...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-55619-7 |
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| author | Chenjia Mi Gavin C. Gee Chance W. Lander Donghoon Shin Matthew L. Atteberry Novruz G. Akhmedov Lamia Hidayatova Jesse D. DiCenso Wai Tak Yip Bin Chen Yihan Shao Yitong Dong |
| author_facet | Chenjia Mi Gavin C. Gee Chance W. Lander Donghoon Shin Matthew L. Atteberry Novruz G. Akhmedov Lamia Hidayatova Jesse D. DiCenso Wai Tak Yip Bin Chen Yihan Shao Yitong Dong |
| author_sort | Chenjia Mi |
| collection | DOAJ |
| description | Abstract Surface defect-induced photoluminescence blinking and photodarkening are ubiquitous in lead halide perovskite quantum dots. Despite efforts to stabilize the surface by chemically engineering ligand binding moieties, blinking accompanied by photodegradation still poses barriers to implementing perovskite quantum dots in quantum emitters. To date, ligand tail engineering in the solid state has rarely been explored for perovskite quantum dots. We posit that attractive intermolecular interactions between low-steric ligand tails, such as π-π stacking, can promote the formation of a nearly epitaxial ligand layer that significantly reduces the quantum dot surface energy. Here, we show that single CsPbBr3 quantum dots covered by stacked phenethylammonium ligands exhibit nearly non-blinking single photon emission with high purity (~ 98%) and extraordinary photostability (12 hours continuous operation and saturated excitations), allowing the determination of size-dependent exciton radiative rates and emission line widths of CsPbBr3 quantum dots at the single particle level. |
| format | Article |
| id | doaj-art-e7b1b40f6c0649bf8ff2a584d70f5020 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-e7b1b40f6c0649bf8ff2a584d70f50202025-01-05T12:37:21ZengNature PortfolioNature Communications2041-17232025-01-0116111310.1038/s41467-024-55619-7Towards non-blinking and photostable perovskite quantum dotsChenjia Mi0Gavin C. Gee1Chance W. Lander2Donghoon Shin3Matthew L. Atteberry4Novruz G. Akhmedov5Lamia Hidayatova6Jesse D. DiCenso7Wai Tak Yip8Bin Chen9Yihan Shao10Yitong Dong11Department of Chemistry and Biochemistry, The University of OklahomaDepartment of Chemistry and Biochemistry, The University of OklahomaDepartment of Chemistry and Biochemistry, The University of OklahomaDepartment of Chemistry, Northwestern UniversityDepartment of Chemistry and Biochemistry, The University of OklahomaDepartment of Chemistry and Biochemistry, The University of OklahomaDepartment of Chemistry and Biochemistry, The University of OklahomaDepartment of Chemistry and Biochemistry, The University of OklahomaDepartment of Chemistry and Biochemistry, The University of OklahomaDepartment of Chemistry, Northwestern UniversityDepartment of Chemistry and Biochemistry, The University of OklahomaDepartment of Chemistry and Biochemistry, The University of OklahomaAbstract Surface defect-induced photoluminescence blinking and photodarkening are ubiquitous in lead halide perovskite quantum dots. Despite efforts to stabilize the surface by chemically engineering ligand binding moieties, blinking accompanied by photodegradation still poses barriers to implementing perovskite quantum dots in quantum emitters. To date, ligand tail engineering in the solid state has rarely been explored for perovskite quantum dots. We posit that attractive intermolecular interactions between low-steric ligand tails, such as π-π stacking, can promote the formation of a nearly epitaxial ligand layer that significantly reduces the quantum dot surface energy. Here, we show that single CsPbBr3 quantum dots covered by stacked phenethylammonium ligands exhibit nearly non-blinking single photon emission with high purity (~ 98%) and extraordinary photostability (12 hours continuous operation and saturated excitations), allowing the determination of size-dependent exciton radiative rates and emission line widths of CsPbBr3 quantum dots at the single particle level.https://doi.org/10.1038/s41467-024-55619-7 |
| spellingShingle | Chenjia Mi Gavin C. Gee Chance W. Lander Donghoon Shin Matthew L. Atteberry Novruz G. Akhmedov Lamia Hidayatova Jesse D. DiCenso Wai Tak Yip Bin Chen Yihan Shao Yitong Dong Towards non-blinking and photostable perovskite quantum dots Nature Communications |
| title | Towards non-blinking and photostable perovskite quantum dots |
| title_full | Towards non-blinking and photostable perovskite quantum dots |
| title_fullStr | Towards non-blinking and photostable perovskite quantum dots |
| title_full_unstemmed | Towards non-blinking and photostable perovskite quantum dots |
| title_short | Towards non-blinking and photostable perovskite quantum dots |
| title_sort | towards non blinking and photostable perovskite quantum dots |
| url | https://doi.org/10.1038/s41467-024-55619-7 |
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